How to flash MIUI Fastboot ROM from Linux

miui-fastboot-howto.rst

How to flash MIUI Fastboot ROM from Linux

• Download the fastboot ROM suitable for your device from the XM Firmware Updater and extract the downloaded archive
• Download and extract the official Android SDK Platform Tools or install them using your package manager of choice.
  • If you are using the official platform tools, make sure adb and fastboot (components of platform-tools) are in your path

$ export PATH=path/to/android/sdk/platform-tools:$PATH

• Connect your device to your computer using a USB cable and enable USB Debugging in your device's settings. Check if your device is detected.

$ adb devices

• If device is listed, reboot to bootloader

$ adb reboot bootloader

• Check if your device is detected by fastboot

$ fastboot devices

You may need to use sudo before fastboot if you get a permission denied error

• There are three scripts for flashing the ROM:
  • flash_all.sh - Flash ROM and erase user data
  • flash_all_except_data_storage.sh - Flash ROM without erasing user data
  • flash_all_lock.sh - Flash ROM and lock the bootloader after flashing. (Only do this if you are doing a warranty claim or as-new re-sale)

Whichever script you decide to use, make sure that the interpreter is mentioned at the top of the script like

#!/bin/sh

If the above line is missing, add it to the top of the script

• Make the script executable (I've chosen flash_all.sh)

$ cd path/to/extracted/ROM/archive
$ chmod a+x ./flash_all.sh

• Run the script

$ ./flash_all.sh

• You may need to run sudo ./flash_all.sh if you had to use sudo with fastboot
• Sit back and relax. The script needs no user interaction. After flashing the ROM, the script will reboot your device.
• Reboot will take quite a bit of time. Don't panic.

But can I use flash_all_lock.sh if I want to lock bootloader or is this not possible?

Yes, flash_all_lock.sh is used to flash the factory ROM and lock the bootloader. Most people will only use this for warranty returns or as-new re-sale, as if you do that you would have to go through the whole unlock procedure again, including the 15-60 day unlock waiting time.

See Q5 of https://www.mi.com/global/support/faq/details/KA-07238

I see, thanks sir. As you said, my purpose for locking os for warranty claims purposes.

The link to download the factory images above seems to be dead now? Do we have an updated source that is safe?

The link to download the factory images above seems to be dead now? Do we have an updated source that is safe?

The URL has been updated to https://xmfirmwareupdater.com/

Got it. Thanks!